Audiphone instruction apparatus or set.



.No." 791,573,. 4 PATENTED JUNE 6,1905.

H. a. MP2 v 'AUDIPHQNE INSTRUCTION APPARATUS OR SET.

APPLICATION FILED NOV. 9, 1904.

l atented june 6, 1905. I

PATENT OFFICE.

HERMAN G. PAPE, OF NEW YORK, N. Y.

AUDIPHONE INSTRUCTION APPARATUS OR SET.

SPECIFICATION forming part of Letters Patent No. 791,573, dated June 6, 1905.

Application filed November 9, 1904. Serial No. 232,009. 7

To all whom it may concern: v Be it known that 1, HERMAN G. PAPE, a citizen of theUnited States, residing at New York, in the county of New York and State of New York, have invented a new and useful Audiphone Instruction Apparatus or Set, of which the following is a specification.

This invention relates to what may be termed an audiphone instruction apparatus or set, which is designed with special reference to the instruction of persons having impaired hearing.

The object of the invention is to provide a simple and effective apparatus, including one or more earpieces for a pupil or pupils, a teachers receiver, (corresponding in function to a telephone-transmitter,) a pupils receiver, and suitable electrical connections and circuitclosers whereby a pupil may connect the pupils receiver to theearpiece or earpieces when it is desired to practice articulation and whereby the teacher may cut out the pupils receiver and simultaneously connect the teachers receiver to the earpieces when it is desired to talk to the pupils.

Another object of the invention is to arrange the apparatus for pupils of varying degrees of deafness by placing certain of the earpieces, designed for very deaf pupils, in a primary circuit and other earpieces, designed for moderately-deaf pupils, in one or more secondary or induced circuits. a

Another object is to provide for cutting certain earpieces or certain series of earpieces out of circuit with the teachers receiver without disturbing the connection between said receiver and a certain other earpiece or certain other earpieces when the teacher desires to give special instructions to a particular pupil or group of pupils.

Another object is to provide a simple arrangement whereby the storage battery, which is designed to supply the electrical energy necessary to the operation of the apparatus, may be quickly and conveniently connected with the charging-cord to facilitate recharging of the battery.

A still further object of the invention is to provide a teachers auxiliary receiver adapted to be connected with a phonograph or other be hereinafter described, illustrated in dia:

gram in the accompanying drawing, and succinctly defined in the appended claims.

The audiphone set or apparatus is usually I mounted on a table, adjacent to one end of which is located a teachersreceiver 1 and at the other end of which are the pupils earpieces 2, 3, 4E, and 5. The number of earpieces is immaterial; but those numbered 2 and 3 are parallel with each other and in series with the teachers receiver 1 and the battery, while theearpieces 4: and 5 are arranged in separate groups or series in separate in-* duced circults.

6 indicates a storage battery connected to a socket 7, designed to be placed in circuit with the wiring of the'set or with a connector 8, designed for attachment to a chargingcordas, for instance, the cord shown and de-- scribed in my Patent No. 775,732, dated N ovember 22, 1904:. v

9 indicates avpupils receiver, which may be placed. in electrical connection with the various earpieces, so that any pupil or group of pupils may practice speaking and may hear the sounds uttered by them.

10 indicates what may be termed the teachers auxiliary receiver, which may be COD. nected with a phonograph, music-box,,or the like and placed in circuit with the pupils earpieces.

11 indicates the voltameter, designed to indicate the strength of the battery.

The various instruments included in the apparatus having now been designated, it is next in order to describe the method of wiring, the arrangement of the circuit-closing devices, and the manipulation of the various parts in practice.

From a binding-post a the wire I) is extended to the contact 0 of a pupils key K, the other contact d of said key being in electrical connection with the pupils receiver 9. From the pupils key K a wire 0 is led to one contact f of a teachers key K the other contact g of which is in electrical connection with the binding-post a. From the teachers key K a line-wire i2 is led to a binding-post 2'. From the binding-post a two branch wires 7c and Z, in which the receivers 1 and 10 are located, are led to the contacts we and a of a teachers switch 0, the third contact on of which is connected by a wire 39 to the pupils receiver 9. The contacts on and m are arranged in line with the pivot of the switch-arm 0, so that the latter may contact with both at the same time. From the switch-arm 0 a wire q is led to the binding-postr, from which two wires 8 and tare led. The wire 8 is connected to one terminal of the battery and the wire 15 to one terminal of the cord connector 8. The other side or terminal of the connector- 8 is connected by a wire it with one terminal 1) of a switch w, whose arm is connected to one terminal of the battery. The other contact, w, of the switch to is connected to a line-wire y, designed to be connected, by means of pupils switches a, b, c, and d, to parallel or bridge wires a b 0 and (5 connected at their opposite ends to the line-wire it. The pupils switches, like the teachers switch, are located at the teachers end of the table, so that by their manipulation the teacher may cut out certain earpieces or groups of earpieces when it is desired to communicate with a particular pupil or group of pupils whose earpieces are left in circuit with theteachers receiver.

The earpieces 2 and 3 are located, respectively, in the wires (0 and Z2 and may be used by a single pupil or dilferent pupils, and, as heretofore stated, any desired number of these earpieces may be employed. In the wires 0 and cl are located the primary windings of a pair of induction-coils 4' and 5, the secondary windings of which are located in secondary or induced circuits 4 and 5 across which the earpieces 4 and 5, respectively, are bridged. Thus we see that the earpieces 2 and 3, while in parallel with each other, are in series with the battery and the teachers receiver and being thus located in a primary circuit are adapted for use by very deaf pupils. The earpieces 4 and 5, on the contrary, are arranged in groups located in sep arate secondary circuits and are therefore adapted for use by pupils whose hearing is not so seriously impaired.

When the teacher desires to instruct a class as a whole, the switch-arm 0 is moved over to the contact m and the several pupils switches a, b, c, and d are closed. The circuit will then be from the battery 6 to the teachers switch by way of the wires s and q, thence through the switch and the wire 71; to the teachers receiver, thence through the wire Z: to the contact 0, key K, wire 6, contact f, key K, and

line-wire it, to the several bridge-wires (13, 1), c and 0V, and back to the battery by way of the wire y and the switch w. This manipulation of the switches will place all the earpieces in electrical connection with the teachers receiver 1, so that the teachers instructions will be communicated from said receiver to all of thepupils. If now the teacher should desire to instruct some individual pupilas, for instance, the one using the earpiece 2the other earpieces are cut out of circuit by opening the switches b, a, and ul. Similarly, if it is desired to instruct an individual group of pupils-for instance, those using the earpieces 4-the switch 0' is left closed and the switches a, 7/, and (Z are opened. Thus by the manipulation of the teachers switch and the pupils switches the teachers receiver 1 may be placed in connection with all of the earpieces or with the ear pieces of individual pupils or certain groups of pupils.

The pupils receiver 9 is designed to permit the pupils to practice articulation, and in order that said receiver may be placed in communication with the earpieces by a pupil the pupils key K is preferably located at the pupils end of the table. Assuming that such exercise is desirable as, for instance, after the teacher has given certain instructions the pupils key K is depressed to the position indicated in dotted lines. This breaks the connection between the wires 0 and 7;, thus cutting out the teachers receiver, and establishes connection between the wire a and the pupils receiver 9. The circuit will now be from the battery 6 to the pupils receiver 9 by way of the wires 8, q, and p, thence to the line-wire it by way of the pupils key K, wire (1, and teachers switch K and thence back to the battery by way of either, any, or all of the bridge-wires a, 6 c and d, the wire 3 and the battery-switch w. The pupils earpieces will thus be in communication with the pnpils receiver, and sounds uttered by the pnpils, either singly or in concert, in comparatively close proximity to the pupils receiver 9 will be heard by the pupils. This exercise may be conducted merely as a matter of practice; but it is assumed for the purpose of this description that the teacher is present and is listening to the exercise for the purpose of correcting any error which may be noted in the articulation of the pupils. In order to make such correction possible as soon as the error is noted, it is necessary to so arrange the apparatus that the teacher may instantly cutout the pupils receiver and simultaneously place the teachers receiver in communication with the earpieces. It is for this reason that the teachers key K is provided. By depressing this key connection from the battery 6 to the teachers receiver byway of the wires 8, q, and 7c and the teachers switch 0, and thence from the teachers receiver to the wire 72, by way of the teachers key K and thence back to the battery by way of either, any, or all of the bridge-wires a 6 c and 0Z the line wire y, and the battery-switch Thus it will be seen that the teacher is enabled to communicate with a pupil or pupils at any time regardless of whether the pupils key is elevated or depressedthat is to say, regardless of whether or not the pupils receiver is in circuit with the earpieces, because, while the pupils key K may be depressed to place the pupils receiver in circuit and to cut out the teachers receiver, the teacher is always enabled regardless of the position of the pupils keyto place the teachers receiver in circuit with the earpieces. When the teacher has cut outthe pupils receiver and has placed her own receiver in circuit by the depression of thek'ey K it is immaterialwhether the pupils key is kept depressed or. not, since in any event the circuit through the pupils receiver 9 must be by way of the wire a, and the terminal f of this wire will be out of connection with the depressed key K". In order to place the teachers auxiliary receiver 10 in circuit with the earpieces, it is simply necessary to move the teachers switch over to the contact a.

The last feature to be described relates to the charging of the battery. The voltameter 11 and a normally open voltameter-key 11" are located in a shunt .2, connecting the wires 1 and By depressing the key 11 the circuit would be shunted through the voltameter 11, by means of which the strength of the battery may be ascertained. If the battery appears to require recharging, the batteryswitch w is shifted to the contact '0, thus placpassed through the voltameter, and if the bat-- tery has been sufiiciently recharged the key is allowed to rise and the apparatus is again in condition for use.

It is believed that from the foregoing the construction, mode of operation, and utility of my audiphone instruction set will be clearly comprehended; but while the illustrated em-' bodiment of the invention is thought at this time to be preferable I desire to reserve the right to effect such changes, modifications, and variations of the illustrated structure as may come fairly within the scope of the pro-- tection prayed.

What I claim is 1. An audiphone instruction set, including an earpiece, a teachers receiver, a pupils receiver, and electrical connections including a pupils key, arranged to cut the teachers receiver out of circuit and to place the pupils receiver in circuit with the earpiece, and a teachers key arranged to cut the pupilsreceiver out of circuit and at the same time to place the teachers receiver in circuit with the earpiece.

2. An audiphone instruction set including a primary circuit, a teachers receiver in said circuit, an earpiece and an induction-coil paralleled in the primary circuit, a secondary circuit including the secondary windings of the induction-coil, and an earpiece in the secondary circuit.

3. An audiphone instruction set including a primary circuit, a teachers receiver in said circuit, an earpiece and an induction-coil paralleled in the primary circuit, a secondary circuit including the secondary winding of the induction-coil, an earpiece in the secondary circuit, and provision for cutting either the first-named earpiece or the induction-coil out of circuit, one independently of the other.

4. An audiphone instruction set including a primary circuit, an earpiece therein, a secondary circuit, an earpiece therein, a teachers receiver, a pupils receiver, and provision for closing the primary circuit through either of said receivers.

5. An audiphone instruction set, including a primary circuit, a secondary circuit, earpieces in said circuits, a teachers receiver, a pupils receiver, a pupils key arranged to cut the teachers receiver out of the primary circuit and to close said circuit through the pupils receiver, and a teachers key arranged to cut out the pupils receiver and to close the circuit through the teachers receiver;

6. An audiphone instruction set, including primary and secondary circuits, an earpiece in the secondary circuit, a teachers receiver,

a pupils receiver, a pupils key arranged to close the primary circuit. through the pupils receiver, and a teachers key arranged to cut out the pupils receiver and to close the primary circuit through the'teachers receiver.

7 An audiphone instruction set, including a primary circuit embracing line-wires, a plurality of bridge-wires, a plurality of pupils switches for electrically connectingthe bridgewires with the line-wires, earpieces in certain of the bridge-wires of the primary circuit, induction-coils in certain other of said wires, secondary circuits including the secondary windings of said coils, earpieces grouped in said secondary circuits, and a teachers receiver in the primary circuit.

8. An audiphone instruction set, including a primary circuit embracing line-wires, a plurality of bridge-wires, a plurality of pupils switches for electrically connecting the bridgewires with the line-wires, earpieces in certain of the bridge-wires of the primary circuit, induction-coils in certain other of said wires, secondary circuits including the secondary windings of said coils, earpieces grouped in said secondary circuits, a teachers receiver, a pupils receiver, and means for closing the primary circuit through either of said receivers.

9. An audiphone instruction set, including a primary circuit embracing line-wires and a plurality of bridge-wires, pupils switches for electrically connecting the bridge-wires with the line-wires, earpieces in certain of the bridge-wires of the primary circuit, inductioncoils in certain other of said wires, secondary circuits including the secondary windings of said coils, ear pieces grouped in said secondary circuits, a teachers receiver, a pupils .receiver, a teachers key, and a pupils key, all arranged substantially as and for the purpose specified.

10. An audiphone instruction set, including an earpiece, a receiver and suitable electrical connections including a battery, a cord connector, and a battery-switch, said batteryswitch being arranged to connect the battery with the receiver and earpiece or with the cord connector as desired.

11. An audiphone instruction set, including an earpiece, a receiver and electrical connections including a battery, a cord connector, a battery-switch for connecting the battery in circuit with the receiver and earpiece or for connecting said battery with the cord connector, and a shunt including a voltameter and a normally open key.

12. An audiphone instruction set including an earpiece, a teachers receiver, a teachers auxiliary receiver, a teachers switch movable to connect either of said receivers with the earpiece, a pupils key arranged to cut either the teachers receiver or the teachers auxiliary receiver out of circuit and to place the pupils receiver in circuit with the earpiece, and a teachers key arranged to cut the pupils receiver out of circuit and at the same time to place the teachers receiver in circuit with the earpiece.

In testimony that I claim the foregoing as my own 1 have hereto aflixed my signature in the presence of two witnesses.

HERMAN G. PAPE.

Witnesses:

ALFRED S. HOUGHTON, JOSEPH A. RUDDY. 

